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Mercedes-Benz B-Class Electric Drive / B250E

W246 2014-2017 36 kWh total (28 kWh normal / 31.5 kWh extended)

Pack size
36 kWh
Capacity
100 Ah
Chemistry
NCA (Tesla 18650 liquid-cooled modules)

Technical specifications

Electrical and control

Nominal voltage310 V
Operating range250–350 V*
ProtocolCAN bus (500 kbps), Mercedes EV-CAN / Tesla powertrain.
Home use (V2H)Supported via Battery-Emulator (stationary home storage)*
Coolingliquid
Battery-Emulator support · GitHub
Built-in contactorsNot confirmed

Physical

DimensionsNot confirmed
Weight282 kg
Cell configuration84s
ConnectorType 2
ConnectorsType 2 Mennekes.

Pricing

Usedfrom £2,388

* Data sourced from dalathegreat/Battery-Emulator firmware driver specifications and the Battery-Emulator Wiki.

How it works

84s Tesla NCA cylindrical modules monitored by Tesla-designed BMS with Mercedes CAN gateway.

Notes

Built by Tesla Motors for Mercedes-Benz using Tesla 18650 liquid-cooled NCA cylindrical cells arranged in an 84s configuration. Operating voltage range 250.0–350.0 V*. High-quality Panasonic cells provide robust performance.

Red flag

Internal coolant manifold seals require pressure testing before indoor installation; 84s operating range drops to 250 V.

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